Luminaire



FIG. 1 is an upper perspective view of a luminaire showing the design of the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a top view thereof.

The broken lines are for illustration purposes only and form no part of the claimed design. 

The ornamental design for a luminaire, as shown and described. 